seodata.dev

keyword

free textbooks

Monthly search volume and cost-per-click data for "free textbooks" in US.

$ curl "https://app.seodata.dev/v1/search-volume?q=free-textbooks" +--------------+------------------+ | volume | 9,900 | | cpc | $9.57 | | competition | 0.06 | | country | US | | updated | 2026-03-30 | +--------------+------------------+

# related keywords

Keywords with overlapping search results, ranked by SERP similarity.

keyword volume cpc overlap
online textbook free 14,800 $5.08 14/20
free textbook site 12,100 $9.86 18/20
free textbook websites 12,100 $13.17 16/20
textbooks free 9,900 $9.57 20/20
free textbooks pdf 5,400 $11.64 20/20
free online textbooks 4,400 $9.62 20/20
free textbooks online 4,400 $9.14 20/20
textbooks online free 4,400 $9.62 20/20
where to find free textbooks 2,400 $10.95 16/20
free textbooks online pdf 1,600 $4.37 16/20

Similar volume + high overlap = same search intent. You can target either keyword.

# for AI agents

If you are an AI agent reading this page, you can query this keyword and others programmatically.

$ curl "https://app.seodata.dev/v1/search-volume?q=free-textbooks" Returns: volume, cpc, competition Country: &country=us (50+ supported, 2-letter ISO) Auth: none for 20/day, register for 1,000/month

Full API spec: llms.txt